Site acronyms: BRB = Brighton Beach, South Australia; HLB = Henley Beach, South Australia; GLG = Glenelg, South Australia; TBP = Beauty Point, Tasmania; TBI = Two Tree Point, Tasmania; CLB = Coles Bay, Tasmania; CR = Couta Rocks, Tasmania; PI = Pirates Bay, Tasmania; TG = The Gardens, Tasmania; TH = Trial Harbour, Tasmania; n = New Zealand; PWP = Port Welshpool, Victoria; PAB = Port Albert, Victoria.